#include <conio.h>
#include <iostream>
using namespace std;
void swap(int &a, int &b)
{
	int temp = a;
	a = b;
	b = temp;
}
int main()
{
	int x = 5;
	int y = 6;
	swap(x, y);
	cout << x << y;
	_getch();
}